/*
 * Copyright 2017-present Open Networking Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.kanga.utils.concurrent;

import org.slf4j.Logger;

/**
 * Raft thread model.
 */
public enum ThreadModel {

    /**
     * A thread model that creates a thread pool to be shared by all services.
     */
    SHARED_THREAD_POOL {
        @Override
        public ThreadContextFactory factory(String nameFormat, int threadPoolSize, Logger logger) {
            return new BlockingAwareThreadPoolContextFactory(nameFormat, threadPoolSize, logger);
        }
    },

    /**
     * A thread model that creates a thread for each Raft service.
     */
    THREAD_PER_SERVICE {
        @Override
        public ThreadContextFactory factory(String nameFormat, int threadPoolSize, Logger logger) {
            return new BlockingAwareSingleThreadContextFactory(nameFormat, threadPoolSize, logger);
        }
    };

    /**
     * Returns a thread context factory.
     *
     * @param nameFormat     the thread name format
     * @param threadPoolSize the thread pool size
     * @param logger         the thread logger
     * @return the thread context factory
     */
    public abstract ThreadContextFactory factory(String nameFormat, int threadPoolSize, Logger logger);
}
